Apparatus for lining can ends



Aug. 7, 1934. F. c. B. PAGE 1,953,904

APPARATUS FOR LINING CAN ENDS Filed April B, 1933 2 Sheets-Sheet 1INVENTOR flw,

2 Sheets-Sheet 2 F. c. B. PAGE APPARATUS FOR LINING JAN-ENDS Filed April8, 195s Aug. 7, 1934.

Patented ug. 7, 1934 Y1,968,904 APPARATUS Fon LINING CAN ENDS Frank C.B. Pageyoyster Bay, N. Y., assigner to E. W. Bliss Company, New York, N.Y., a cor-L poration of Delaware Application Apro s. 1933, serial No.665,081

vc Claims. (-01.113--805 lIn tin cans or receptacles for certainpurposes it is customary to employ a lining within the can end or headof paper or other flexible material. For such lining various flexiblesheet products paper or various iiexible materials in thev nature oflrns. For convenience the term paper will be used to designate any suchiiexible sheet or film used as such lining. 110 It is desirable to formthe head Aor can end with an incurved marginal flange or curledA edgeand to fit the paper lining at curled edge, so that when theV head isseamed to the body of the can thev marginal portion of the paper liningwillserve asa yielding packing for the double seam.

The present invention provides an improved apparatus for inexpensivelyapplying the` linings t-o the `sheet metal heads. `This apparatus is of`that class having means for punching the lining from a sheet or blanlr`and applying it in relation to thehead, which operations may beperformed at one stroke. The head is held inv exact position beneatha'cutting die; the paper 31s fed over the cutting die, a blank holderdescends upon it to hold it marginally in place; a cutting punch thendescends and cuts out the paper blank; the blank is then carried downwithin the die and received temporarily in a recess beneath, `andfinally it is pushed down from said recess Yonto the head and itsmarginal portion is forced intothe exterior ilange of the head andwithin the curled edge thereof. On the return stroke ofthe punchmembersthe head with its lining v-thussecurely attached is fed out and itsplace taken by the next headto be lined.

.For` accomplishing these punching and uniting operations adouble-action press is usedhaving relatively movable concentric`punching members. Such press may` in general be ofthe character set'forth in the patents of E. W. Bliss Company, No.

796,534, Auguste, .1905, and No. 859,977,` July 16, 1907; these Abeingnamed merelyl as instances `of a general. type of double-action presswhich, with proper modification of its punching members, "may beapplicable for practicing the, present invntion. v- The accompanyingydrawingsillustrate the preferred construction ofa suitabledouble-actionpress and illustrate the steps in the process and the completed product.

Fig. 1 is a vertical mid-section through the bed, dievand punchingmembers, showing lthe latter at the'. bottom ofthe stroke, having justfinished .thelining operation.` L H are used, such as oiled orparaiiined or coated its margin within such correct Fig. 2 is afragmentary plan tal section taken mainly von partly in horizontheplanes of the Fig. 3 is a'section similar scale, showing `the punchingmembers at the instant of cutting the paper section being at rightangles to Fig. l on a smaller blank, the plane of the to Fig. 1, so asto show the feeding of the paper to the die.

Fig. 4 is a half-section of shown in Fig. 1,- showing the punch membersat certain of the parts topstroke.

Fig. 5 is a fragmentary half-section similar to Fig.

4, but showing the punch members on the down strokeY and while carryingthe blank down within the die.

Fig. I6 is a diametrical section of the finished lined head or can endon a larger scale.

. Fig. 7 is an inverted plan of the head with its paper lining partlyFig. 8 is a fragmentary view on the same scale broken away.

asiFig. 6, showing the position of the punch members at `theend. oftheir down stroke.

Referring rst to Figs. 6 and 7, the head or can end A is shown as havinga raised asurrounded by an annular raised portion b exterior to which isa flange middle portion c having an incurled marginal portion or edge d.For a cantop, the

position shown in Fig.

6 is inverted, the raised portion c in this case being a depressedportion.

For Fig.

a can bottom., theV arrangement shown in 6` is that which the partswould occupy in the finished can. For a can top having a frictionlid'orcap, the latter (lettered B) is formed with aftapered portionwedged within a tapered neck ef formed `in the annular head A. This isthe usual construction of friction top can heads. That side of the headwhich is toface the interior of the finished can is covered with theliner or lining C, `the middle portion of which rests againstandissupported bythe raised portion a of the head, and the outerportions of which are pressed into approximate conformity with the outerannularrportions ofthe head, itsmarginal portion being entered down edgehead. This is liners.` When the the can body the paper within andwithinsthe flange c and its curled inside the curled edge d of the metalthe usual Way of applying such4 head is seamed to the end of the curlededge d a packing between the flange c serves as be described. D is the Eis the usual head slide thereof, and F the usual nch slide.y

Just over the bed D turns an intermittently .rotating dial or turntableG. This is 1110 successively into position, accurately centered bellFigs. 3 and 4 show` neath the punch members. the head to be lined thuspositioned.

On top of the bed D and suitably fastened thereon above the top of thedial G is the cutting die H, its inner margin being of the contour ofthe paper blank to be cut. It is shown as supported within a bolster Ifastened downto the bed by bolts 14. The opening in the cutting die isslightly` expanded downwardly, as shown at 14', Fig. 1.

` The head slide E carries the usual blank holder J and cutting punch K;the punch is tubular and conforms exteriorly to the openingin the die H;while the blank holder J encloses the cutting punch and in action comesdown upon the top of the die H and forcibly holds down the paper blankthereon. In the construction shown the punch K is fixedly held in abolster L fastened beneath theslide E; while the blank holder J isrelatively movable, being guided by pins 15 and pressed down by springs16. The pins 15 have heads sliding in recesses 1'7 in the bolster L andbottoming thereon on the upstroke so as to carry up the blank holder asshown inFig. 4. The springs 16 (of which three are shown) are guided inrecessesV .1.8, press downwardly against the flanged portion of theblank holder and react upwardly against brackets 19 fastened down on topof the head plate M intervening between the slide E and the bolster L.(Or any other usual construction may be substituted).

The punch slide F carries beneath it in usual manner the punch body Nwhich reciprocates within the bolster L andcutting punch K in usualmannen To its lower end is fastened an annular punch member or presserfoot P and within this according to the shape orconstruction of the headA to be lined) are oneor more yielding pads.

, In the precise construction shown there is a 50l middle pad Q movablewithin a yielding pad member R, the outer marginal portion of whichsurrounds the pad Q and occupies the annular space between this pad andthe punch member P. In theconstruction shown the member P is rigidlyfastened to the punch body N; the pad member R is movablewithin it,being pressed down by a somewhat heavy spring 20; and the middle pad Qis movably attached within the member AR and pressed down by relativelylighter springs 2l. The middle pad Q corresponds to the raised portion aof the head; and the surrounding annular portion of the pad Rcorresponds in location to the annular raised portion b of the head A;and the punch member P corresponds in position to the annular flange cof the head. The contour of the member P is such that at the bottom ofits stroke it ts around the annular member b of the head and conforms toits flange c entering within the curled edge d (all as shown in Fig. 8).

In operation the paper to form the lining C is fed as a strip 25 fromatroll 26 by means of intermittently turning feed rolls 27 (Fig. 3).Fig. 2 shows the stripV 25 guided between flanges 28,

28 of a parallel paper guide 30. During the' paper feeding the punchmembers are elevated as in Fig. 4; in this position the pad member isheld up by a pin key 31 seated in the punch head N and engaging a notchin a central stem 32 Xed to the member R.

The slide E descends in advance of the slide F, and its blank holder Jwhich projects slightly lower than the cutting punch K rst engages thefed paper and clamps it against the cutting die with all the force ofthe springs 16. Instantly thereafter the further movement causes 'thepunch K to cut through the paper and carry itA downward. into a recesswhich is shown as within the die'H, and in which recess it istemporarily held in theposition shown in Fig. 5. From this point in thestroke the slides E, F move nearly together' so that the punch membersK, P, R and Q descend at substantially the same speed within the die H;they are shown about half way through this die in Fig. 5. The

cutting die K is stopped in the position shown in Fig. l, at the limitof down stroke of the slide E; thereafter the movement of the slide Fcontinues and carries down the inner members P, R, Q to the bottom'oftheir respective strokes. Moving down together they carry the paperblank to the position shown in dotted lines at :t in Fig. 4, where itstrikes the top of the middle raised portion a of the head A; at thispoint in the stroke it is clamped against a by the pad Q, with thepressure imparted by the springs 21. Following immediately behind thepad Q comes the pad member R which continues its descent until it isstopped by contact with the annular portion tially around this clampedportion. InstantlyV thereafter thel continued descentl of the punchmember P brings it into contact with this marginal portion of the paperand it carries the latter down, conforming it to the tapered exterior ofthe portion b and forcing it down into the flange e of the head. In thisdownward movement the outer edge of the paper is directed inwardly by aconed portion 12 of the opening 12, as shown in Figs 3, 4 and 5. It willbe observed that the paper lining is cut to a larger circle than theouter contour of the head so as to provide sufficient material for thedownwardly conformed portion of the lining. Thus during this portion ofthe stroke the outer edge of the paper keeps traveling inward, and atthe end ofthe stroke of P it is carried down against the bottom ange cand its outer edge is tucked within the curled edge d of the'head asshown in Fig. 8. l

Thereupon the ascending stroke of the punch occurs, lifting its membersQ, R, P free from the head; as' these members pass up the slide E riseswith a slightly delayed movement, lifting the cutting punch K out of thedie H and finally lifting the blank-holder J off from the die, wherebythe parts arel restored tol their initial position shown in Fig. 4.Thereupon the dial G turns one movement, Ycarrying the lined headbeyond-to the position shown at 12a in Fig. 2-and bringing the next headinto place beneath the punch members. Simultaneously the next feed ofthe paper strip 25 takes then repeated.

The machine thus described performs in one operation the two operationsof (l) cutting out the paper blanks, and (2) uniting the paper blanks tothe heads. Itv thus avoids the necessity of successively feedingindividual paper blanks, 150 I place. The operation isv with thedisadvantage of occasionally feeding two blanks together, which resultsin applying a double thickness of liner to the head.` The operation isas rapid as the speed at whichA the press can be driven. The coincidentlocation of the cutting dies and uniting means for performing bothoperations at one stroke is not new per se and is not essential to myinvention.

While the construction shown and described is preferred, it will beunderstood that this may be varied according to the particularconstruction and shape of the head to be lined and the particularmaterial (paper or other sheet or film substance) which may be requiredfor the lining. Accordingly the punch members P, Q, R may be Varied inproportions, number and arrangement, and in the downward pressureapplied to the movable member or members, as may be requisite to adaptthe mechanism to any required conditions.

I claim as my invention:

1. Apparatus for uniting a paper lining to a flanged metal head having acurled marginal edge, comprising a cutting die and punch, means forholding the head in place beneath such die, and punch members movabledown within the cutting punch and die comprising a springpressed padadapted to clamp the lining against the head, and a separately-movableannular punch portion movable down subsequently into the flange of thehead and adapted to force the edge of the lining within the curled edge0f the head.

2. Apparatus for uniting a paper lining to a flanged metal head,comprising a cutting die and punch, means for feeding the head andholding it in place, and punch members distinct from the cutting punchcomprising a spring-pressed pad adapted to clamp the lining against thehead, and a separately-movable annular punch portion movable downsubsequently into the flange of the head and adapted to force the edgeci the lining within the curled edge of the head.

3. Apparatus for uniting a paper lining to a flanged metal head,comprising a cutting die and punch, means for holding the head in place,and

punch members distinct from the cutting punch,

and relatively movable with respect to each other, i

comprising an outer annular punch portion, and a spring pressed padwithin it adapted to clamp the lining against the head, such annularpunch portion being movable down into the flange of the head after thespring pressed pad has been arn rested and being adapted to force theedge of the lining within the curled edge oi the head.

4. Apparatus for uniting a paper lining to a anged metal head having anouter flange with a curled marginal edge, an inner raised portion, andan intervening annular portion, comprising a cutting die and punch,means for holding the head in place, and punch members distinct from thecutting punch, comprising a middle pad adapted to clamp the liningagainst the raised middle portion of the head, a separately-movableannular pad portion surrounding it, adapted `to press the lining againstthe intervening annular portion of the head, and an outer annular punchportion movable down subsequently into the flange of the head andadapted to force the edge of the lining within the curled edge of thehead.

5. Apparatus for uniting the paper lining to a flanged metal head havinga curled marginal edge, comprising a cutting die and punch adapted tocut out the paper lining, the die having a rc cess therein fortemporarily receiving the cut lining, means for holding the head inplace, and uniting means coincident with the head and movable to carrythe lining from said recess against the head, comprising a pad forpressing the lining against the top of the head, and a separatelymovableannular punch portion, with means for moving it subsequently downward toforce the edge of the lining against the flange of the head and withinits curled edge.

6. Apparatus according to claim 5, with an annular holder for thematerial from which the lining is to be cut surrounding the cuttingpunch and movable in advance of such punch to clamp the material againstthe top of the cutting die.

FRANK C. B. PAGE.

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